b+&~SАu= Nm3჏tEgPU je-bYZ&ޣb+&~SАu= Nm3჏tEgPU je-bYZ&ޣb+&~SАu= Nm3჏tEgPU je-bYZ&ޣb+&~SАu= Nm3჏tEgPU je-bYZ&ޣb+&~SАu= Nm3჏tEgPU je-bYZ&ޣb+&~SАu= Nm3჏tEgPU je-bYZ&ޣb+&~SАu= Nm3჏tEgPU je-bYZ&ޣb+&~SАu= Nm3჏tEgPU je-bYZ&ޣb+&~SАu= Nm3჏tEgPU je-bYZ&ޣb+&~SАu= Nm3჏tEgPU je-bYZ&ޣwitness: lock order reversal: 1st 0xfffffd807d0bf2b8 inode (&ip->i_lock) 2nd 0xffffffff827728c0 netlock (netlock) lock order "netlock"(rwlock) -> "&ip->i_lock"(rrwlock) first seen at: #0 witness_checkorder+0x65e witness_lock_order_add sys/kern/subr_witness.c:2463 [inline] #0 witness_checkorder+0x65e sys/kern/subr_witness.c:880 #1 rw_enter+0xd4 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 vget+0x1c6 sys/kern/vfs_subr.c:671 #6 ktrwriteraw+0x138 sys/kern/kern_ktrace.c:659 #7 ktrstruct+0x169 ktrwrite2 sys/kern/kern_ktrace.c:627 [inline] #7 ktrstruct+0x169 sys/kern/kern_ktrace.c:311 #8 sys_connect+0x246 #9 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #10 Xsyscall+0x128 lock order "&ip->i_lock"(rrwlock) -> "netlock"(rwlock) first seen at: #0 witness_checkorder+0x65e witness_lock_order_add sys/kern/subr_witness.c:2463 [inline] #0 witness_checkorder+0x65e sys/kern/subr_witness.c:880 #1 rw_enter_write+0x5b sys/kern/kern_rwlock.c:127 #2 uvn_get+0xeb uvm_vnode_lock sys/uvm/uvm_vnode.c:1501 [inline] #2 uvn_get+0xeb sys/uvm/uvm_vnode.c:993 #3 uvm_fault+0xa41 sys/uvm/uvm_fault.c:1073 #4 kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265 #5 kerntrap+0xef sys/arch/amd64/amd64/trap.c:321 #6 alltraps_kern_meltdown+0x7b #7 copyin+0x53 #8 sys_connect+0x9b sys/kern/uipc_syscalls.c:362 #9 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #10 Xsyscall+0x128 Stopped at db_enter+0x18: addq $0x8,%rsp ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 witness_checkorder(ffffffff827728c0,9,0) at witness_checkorder+0xf5a witness_debugger sys/kern/subr_witness.c:2490 [inline] witness_checkorder(ffffffff827728c0,9,0) at witness_checkorder+0xf5a sys/kern/subr_witness.c:1087 rw_enter_write(ffffffff827728b0) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:127 uvn_get(fffffd8066a167a8,0,ffff800021ebd138,ffff800021ebd0d4,0,1) at uvn_get+0xeb uvm_vnode_lock sys/uvm/uvm_vnode.c:1501 [inline] uvn_get(fffffd8066a167a8,0,ffff800021ebd138,ffff800021ebd0d4,0,1) at uvn_get+0xeb sys/uvm/uvm_vnode.c:993 uvm_fault(fffffd807effa5c0,20000000,0,1) at uvm_fault+0xa41 sys/uvm/uvm_fault.c:1073 kpageflttrap(ffff800021ebd260,20000000) at kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265 kerntrap(ffff800021ebd260) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:321 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyin() at copyin+0x53 sys_connect(ffff8000212822a8,ffff800021ebd428,ffff800021ebd470) at sys_connect+0x9b sys/kern/uipc_syscalls.c:362 syscall(ffff800021ebd4f0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021ebd4f0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x99b9bdb9a10, count: -12 ddb{0}> show registers rdi 0x3 rsi 0x40000 acpi_pdirpa+0x2be68 rbp 0xffff800021ebcda0 rbx 0x3 rdx 0xffff800000b16240 rcx 0x3 rax 0x3ffff acpi_pdirpa+0x2be67 r8 0xffffffff823582d3 witness_checkorder+0xf33 r9 0x5 r10 0x6cba203c900b2cc5 r11 0x3f224dc0e2ac9c24 r12 0xffffffff828bda80 w_lodata+0x4c870 r13 0 r14 0xffffffff828ba7a0 w_lodata+0x49590 r15 0xfffffd8002ce15c0 rip 0xffffffff81f33568 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021ebcd90 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.1) pid=2126 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=72, nice=20 forw=0xffffffffffffffff, list=0xffff800021283c48,0xffff8000212839c8 process=0xffff800021236950 user=0xffff800021eb8000, vmspace=0xfffffd807effa5c0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 41302 491481 31836 0 7 0 syz-executor.0 96064 330414 69139 0 2 0 syz-executor.1 *96064 2126 69139 0 7 0x4000000 syz-executor.1 69139 372782 80792 0 3 0x82 nanosleep syz-executor.1 53482 9909 0 0 3 0x14200 bored sosplice 31836 254604 80792 0 2 0x2 syz-executor.0 80792 429813 53330 0 3 0x82 thrsleep syz-fuzzer 80792 283277 53330 0 3 0x4000082 nanosleep syz-fuzzer 80792 433069 53330 0 3 0x4000082 kqread syz-fuzzer 80792 490820 53330 0 3 0x4000082 thrsleep syz-fuzzer 80792 174413 53330 0 3 0x4000082 nanosleep syz-fuzzer 80792 26475 53330 0 3 0x4000082 thrsleep syz-fuzzer 80792 180924 53330 0 3 0x4000082 thrsleep syz-fuzzer 80792 422810 53330 0 3 0x4000082 thrsleep syz-fuzzer 53330 476650 44002 0 3 0x10008a pause ksh 44002 199030 66856 0 3 0x92 select sshd 19620 25642 1 0 3 0x100083 ttyopn getty 66856 101350 1 0 3 0x80 select sshd 28898 215923 3276 74 3 0x100092 bpf pflogd 3276 317603 1 0 3 0x80 netio pflogd 62384 16807 65361 73 3 0x100090 kqread syslogd 65361 367699 1 0 3 0x100082 netio syslogd 88917 213040 1 77 3 0x100090 poll dhclient 43185 396838 1 0 3 0x80 poll dhclient 24161 324073 0 0 3 0x14200 bored smr 87191 401377 0 0 2 0x14200 zerothread 17845 207886 0 0 3 0x14200 aiodoned aiodoned 21381 160556 0 0 3 0x14200 syncer update 55075 364416 0 0 3 0x14200 cleaner cleaner 14820 278333 0 0 3 0x14200 reaper reaper 87561 209432 0 0 3 0x14200 pgdaemon pagedaemon 80175 473679 0 0 3 0x14200 bored crynlk 5649 447498 0 0 3 0x14200 bored crypto 3771 231117 0 0 3 0x14200 bored viomb 9606 376172 0 0 3 0x40014200 acpi0 acpi0 49231 494096 0 0 3 0x40014200 idle1 37533 55561 0 0 3 0x14200 bored softnet 91611 364598 0 0 3 0x14200 bored systqmp 50143 409688 0 0 3 0x14200 bored systq 69670 303828 0 0 3 0x40014200 bored softclock 92369 147896 0 0 3 0x40014200 idle0 1 214876 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 96064 (syz-executor.1) thread 0xffff8000212822a8 (2126) exclusive rrwlock inode r = 0 (0xfffffd807d0bf2b8) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 rw_enter+0x446 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 uvn_get+0xd7 uvm_vnode_lock sys/uvm/uvm_vnode.c:1499 [inline] #5 uvn_get+0xd7 sys/uvm/uvm_vnode.c:993 #6 uvm_fault+0xa41 sys/uvm/uvm_fault.c:1073 #7 kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265 #8 kerntrap+0xef sys/arch/amd64/amd64/trap.c:321 #9 alltraps_kern_meltdown+0x7b #10 copyin+0x53 #11 sys_connect+0x9b sys/kern/uipc_syscalls.c:362 #12 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #13 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828db810) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 syscall+0x3fd mi_syscall sys/sys/syscall_mi.h:93 [inline] #1 syscall+0x3fd sys/arch/amd64/amd64/trap.c:590 #2 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9509 6425K 7068K 78643K 11522 0 pcb 13 8K 8K 78643K 69 0 rtable 105 3K 3K 78643K 318 0 ifaddr 57 12K 12K 78643K 120 0 counters 43 33K 34K 78643K 69 0 ioctlops 0 0K 4K 78643K 1565 0 iov 0 0K 16K 78643K 61 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1700 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 17 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1825 197K 290K 78643K 13109 0 file desc 6 17K 25K 78643K 1429 0 proc 62 63K 95K 78643K 707 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 33 0 in_multi 33 2K 2K 78643K 72 0 ether_multi 1 0K 0K 78643K 19 0 mrt 0 0K 0K 78643K 8 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 2K 78643K 424 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 128 89K 90K 78643K 4023 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 121 0 NDP 9 0K 0K 78643K 28 0 temp 118 3965K 4036K 78643K 12882 0 kqueue 4 5K 8K 78643K 66 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 8 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 55 0 53 1 0 1 1 0 8 0 rtentry 112 56 0 12 2 0 2 2 0 8 0 unpcb 120 155 0 145 1 0 1 1 0 8 0 syncache 296 7 0 7 2 2 0 1 0 8 0 tcpqe 32 179 0 179 3 2 1 1 0 8 1 tcpcb 736 229 0 222 8 6 2 4 0 8 0 inpcb 296 691 0 681 4 2 2 2 0 8 0 nd6 48 9 0 3 1 0 1 1 0 8 0 kcovpl 48 3 0 1 1 0 1 1 0 8 0 ppxss 1128 7 0 7 1 1 0 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 12 0 5 1 0 1 1 0 8 0 pfstkey 112 12 0 5 1 0 1 1 0 8 0 pfstate 328 12 0 5 1 0 1 1 0 8 0 pfrule 1360 77 0 71 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 235 0 44 12 0 12 12 0 8 0 art_table 32 236 0 44 2 0 2 2 0 8 0 art_node 16 55 0 15 1 0 1 1 0 8 0 sysvmsgpl 40 47 0 9 1 0 1 1 0 8 0 semupl 112 6 0 6 1 1 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3395 0 1993 89 1 88 89 0 8 0 ffsino 272 3395 0 1993 94 0 94 94 0 8 0 nchpl 144 5277 0 3685 60 0 60 60 0 8 0 uvmvnodes 72 3675 0 0 67 0 67 67 0 8 0 vnodes 208 3675 0 0 194 0 194 194 0 8 0 namei 1024 13439 0 13439 1 0 1 1 0 8 1 percpumem 16 45 0 13 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 560 5 0 0 1 0 1 1 0 8 0 scxspl 216 15103 0 15103 9 8 1 8 0 8 1 plimitpl 152 117 0 109 1 0 1 1 0 8 0 sigapl 424 1643 0 1609 4 0 4 4 0 8 0 futexpl 56 10829 0 10829 1 0 1 1 0 8 1 knotepl 112 134 0 114 1 0 1 1 0 8 0 kqueuepl 152 607 0 604 1 0 1 1 0 8 0 pipepl 304 135 0 124 3 2 1 2 0 8 0 fdescpl 496 1626 0 1609 3 0 3 3 0 8 0 filepl 152 5910 0 5806 5 0 5 5 0 8 0 lockfpl 104 107 0 106 1 0 1 1 0 8 0 lockfspl 48 50 0 49 1 0 1 1 0 8 0 sessionpl 144 19 0 8 1 0 1 1 0 8 0 pgrppl 48 33 0 22 1 0 1 1 0 8 0 ucredpl 96 884 0 875 1 0 1 1 0 8 0 zombiepl 144 1609 0 1609 1 0 1 1 0 8 1 processpl 1056 1643 0 1609 3 0 3 3 0 8 0 procpl 656 3360 0 3318 4 0 4 4 0 8 0 sosppl 168 45 0 44 2 1 1 1 0 8 0 sockpl 400 901 0 879 4 0 4 4 0 8 1 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k 2048 166 0 0 17 0 17 17 0 8 0 mtagpl 96 58 0 0 2 0 2 2 0 8 0 mbufpl 256 352 0 0 21 0 21 21 0 8 0 bufpl 280 5350 0 283 362 0 362 362 0 8 0 anonpl 16 114788 0 109913 22 1 21 21 0 124 0 amapchunkpl 152 6061 0 5904 8 1 7 8 0 158 0 amappl16 192 4322 0 4165 10 1 9 9 0 8 1 amappl15 184 704 0 699 1 0 1 1 0 8 0 amappl14 176 506 0 500 1 0 1 1 0 8 0 amappl13 168 31 0 30 1 0 1 1 0 8 0 amappl12 160 14 0 8 1 0 1 1 0 8 0 amappl11 152 58 0 43 1 0 1 1 0 8 0 amappl10 144 221 0 217 1 0 1 1 0 8 0 amappl9 136 85 0 84 1 0 1 1 0 8 0 amappl8 128 183 0 135 2 0 2 2 0 8 0 amappl7 120 259 0 251 1 0 1 1 0 8 0 amappl6 112 289 0 278 1 0 1 1 0 8 0 amappl5 104 1890 0 1869 1 0 1 1 0 8 0 amappl4 96 759 0 732 1 0 1 1 0 8 0 amappl3 88 157 0 150 1 0 1 1 0 8 0 amappl2 80 11195 0 11128 3 0 3 3 0 8 0 amappl1 72 55434 0 54943 24 13 11 19 0 8 0 amappl 80 3642 0 3584 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 64 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1631 0 1609 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1631 0 1609 1 0 1 1 0 8 0 vmmpekpl 168 11878 0 11848 2 0 2 2 0 8 0 vmmpepl 168 206250 0 204785 85 17 68 75 0 357 3 vmsppl 368 1630 0 1609 2 0 2 2 0 8 0 pdppl 4096 3269 0 3223 62 16 46 46 0 8 0 pvpl 32 541044 0 532966 124 50 74 114 0 265 3 pmappl 232 1630 0 1609 3 1 2 2 0 8 0 extentpl 40 57 0 39 1 0 1 1 0 8 0 phpool 112 324 0 26 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 witness_checkorder(ffffffff827728c0,9,0) at witness_checkorder+0xf5a witness_debugger sys/kern/subr_witness.c:2490 [inline] witness_checkorder(ffffffff827728c0,9,0) at witness_checkorder+0xf5a sys/kern/subr_witness.c:1087 rw_enter_write(ffffffff827728b0) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:127 uvn_get(fffffd8066a167a8,0,ffff800021ebd138,ffff800021ebd0d4,0,1) at uvn_get+0xeb uvm_vnode_lock sys/uvm/uvm_vnode.c:1501 [inline] uvn_get(fffffd8066a167a8,0,ffff800021ebd138,ffff800021ebd0d4,0,1) at uvn_get+0xeb sys/uvm/uvm_vnode.c:993 uvm_fault(fffffd807effa5c0,20000000,0,1) at uvm_fault+0xa41 sys/uvm/uvm_fault.c:1073 kpageflttrap(ffff800021ebd260,20000000) at kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265 kerntrap(ffff800021ebd260) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:321 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyin() at copyin+0x53 sys_connect(ffff8000212822a8,ffff800021ebd428,ffff800021ebd470) at sys_connect+0x9b sys/kern/uipc_syscalls.c:362 syscall(ffff800021ebd4f0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021ebd4f0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x99b9bdb9a10, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d68ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828db608) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828db608) at __mp_lock+0x122 sys/kern/kern_lock.c:147 upageflttrap(ffff8000228c5290,25abacc9000) at upageflttrap+0x77 sys/arch/amd64/amd64/trap.c:180 usertrap(ffff8000228c5290) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:406 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffe7f70, count: -7